Molding-machine.



L. G. HAAS.

MOLDING MACHINE.

APPucATloN HLED 1AN.5,1914.

Patented (M12, 1915.

2 SHEETS-SHEET 2.

,life Jaase rap sraaas taaa-*hat oaiaioh LEO Gr. I'IAAS'QF PASADEN, CALIFORNIA.

` specification of Letters atent.

Appiicaan area :namiary 5, 1914 serial m. 810,825.

To' all fwhom it may Gomera: I i

Be it know that I, Lao G. HAAsE,a citizeh off-he United States, r'esdhg at Pasadeiia;Y in the 'cot of Los` Angeles, State of C'aliforhit, hit'veV imfehte'd new and lisek' Ahother object is to p'r'ov'ide a ioldi'ng'.

machine in ehieh, the cover' and the ciosem for an opening'F` therei` iha be for'riied on the 'same apparats b siiitable attachments. Another object is to 'providemeans in a ni'oldihz Irriabhihe of the above' Character for adji'istabl siii'zptrtiiiaa palltt in the mola ahtl means by which the pailet aiidvm'olded cover i'na be levated to 'faeilitate the remo'val thereof from the Ihbhine.

Ahothei* object is to provide means for counter-baianciiia the pallet aii'd the moljded co'ife'r so that thehia be re'adly` With' drawii from the molo. i

The inietion primarily rsides in a frame having a 'niold box thereoii, a pallet car'ri plate itithi'ri thetmold boi! 'manu-" ally opeatedrheans f'o'i`` raisihgand loweri iiig' the plate ieliidipz a 'counter-weight, a

coi'e in the niold box for fori'n ah 'opening in the hlltled 'ver, n'i'es foi1 rflildng;` a lid for the opehing', iii the cover.

i In the lr'awiiigs aeconipaning this speak ficatio, Filiiiel i's a Vpers'p'e'o'tiife view of the moldinz machine showing it in feadiness te receive the pallet and i'l'astic ih'iXture o t'o form the ove. Fi'g; 2 is a perspeotive view of a ring" 'ldapted V,to'be mount'ed on ythe core in the n'iold b'oXtof'orm a ebuntersunk portion in the cover arohd the ;opeingfg:`

thereiri'. Figj. 3 is'a detailin perspective of a bar' adapttd te, beeonneeted to the ma China te form a key-slot in the lid f'the Cover. Figx 4 i a prspe'etive iiew 'of the pallet f'o'r carria the iid Fig'. 5 is a perspeetive *view of theattaehmeiit of the machine for supporting the paliet shown. in Figi; ;4a .Pig bis perspective view ofthe pallet ifor earryiiiathe eat/er. Fig.V 7 is a prsp'ctive 'viewof the fooverb showing the opening therein. Fig. 8 is a perspective vieifv of the lid for` closing' the opening' in the .Coverq Fig; 9 is a longitudinal Vertical seotlo'ii of the machine illustrating the manner of moldin'` the cover. Fig. 10 is a trans- 7 r'ateatea oet. 12, 1915.

verse section showing' the 'mariner of moldino; the lid for the'cover. Fig. i11 is a detail iii section 'showing the manner of ad- ]iistably suppoftihg the cover carrying pallet.

More sp'eoifioally, 12 indioates a table supported on standards 14: on a bed-plate 15; the table 12 carryihg a recltangular frame 16 'ri which is a mold comprising ,a substantially'rectangular metallie mold rhend-` Vbei' 17 open at the top and bottom and formed Withinclined side Walls rounded at 1 the Corners, the lower edge of the mold member 17 lbeing); supported by the table 12. The mold member 17 is provided Vfor the purpose of inolding' the tapered sides of the cover.

Mounted Within the space inclosed b the mold member 17 is a. plate 18 attached to the upper end of a verticall disposed tube 19 extendirigthi'og'h an opening' 20 iii the table 12, which tube is designed to be reoiproeated (Verticallfv and is guid'ed bV means of parallel brackets 21 carried by the tbe 19 and xtehdihz oh opp'osite sides of a pair of the Vstandards 111 arrang'e'd'i transverse alinelrri'eht [With thetobe 19. A 'pair of Vthe bra'ckets 21 is disposedintermediate the ends of the rtube` 19 and aothe'r pair is' arranged at itsloif'v'er enda I L Coniieoting" WithV the lower end of the tube is a sprooket Chain 22` fwhich passes up and i over a sproket wheel 23 on a shaft 24c` fitte'd With a had-erahk 25 and extendin); doti'nit'ard frofr'i thesprocket 'wheel 23 conne'ct's vwith a' ooiinter-weigl`1t`26 slidabl mohnt'ed oh one of the standards 14. Mouhterl iiithe ``Corners 'of the plate 18"are boltsz? whieh 'fermfsupnorts for theJ plate' oh the table 12 and are adiste'd in the 'plate 18 sol that the Corners of'the plate 'will be equallv spported llffounted on the upper face of the table 12 is a tapered olihdrical CoreV '28' iivhich ext'eds t'ota point slightlv above the upper edge of the mold member 17 thi-eupha pefforatin 29 ia the plate 18. Mointed ih Athe.'corhef's ;of the plate 18 are soreiis's BOwhich "for1n supports for the edge ofo a 'pallet 31 bo'nforiiha' in Outline' to the int''riei of thezmold member :L7` and having I i the core 28.

In molding the cover 35V shown in Fig. 7 the plate 18 is disposed in its lowermost position with the bolts-27 resting on the top of the table 12 and the pallet 31 is placed thereon with its underside resting on the screws which are adjusted to compensate' for any irregularities of the pallet so as to form a rigid support for its corners. After the pallet 31 is in position a ring 34,v having a downwardly converging outer edge is placed over the core 28 and supported thereby,as shown in lFig. 9 ;V the bottom edge w of the ring 34 being spaced a short distance above the upper face ofthe pallet 31. The

' plastic material, VVpreferably. concrete, of

which the cover shownV in Fig. 7, is

formed, 7is then poured 'inthe mold formed bythe mold member 17 and the pallet 31;

:the pallet 31 forming the bottomof the mold. This plastic material 'is suitably tamped and leveled off flush with the upper edge of the` mold member 17. The table 12 is then elevatedbyrotating the crank 25 to cause the sprocket wheel 23,4to' advance the chain 22 and thereby exert tan upward pull on the tube 19, thereby moving the latter in a Vertical direction. VThe counter-weight will exert a downward pull "on .the outer end of the chain 22', therebyv malntaining the 'latter taut and assisting in the elevation of the plate 18 and its load.

`When the plate 18 has been moved into theposition indicated in dotted' lines in Fig. 9 it will be disposed above the upper edge of the mold member 17 and ,clear of the core 28 so that* the 'pallet 31 arrying the molded cover thereon may be readily removed and placed on drying racks where the plastlc' i material thereon will be allowed to harden.

The plate 18v will be'heldfiin its uppermost position by means of a spring rod 13 :disposed adjacent one of the side standards 14 land secured to the bed-plate15-the upper end of the springrod 13 Vnormally bearing' against the standard 14 in the path of travel cover 35; the ring 33 forming a depression or counter-sunk portion 37 around the openi vuppermost position. Thetspring rod 13 is manually disengaged from the bracket 21 whenit is desiredto lower the plate 18.`

1 The ring 34'is removed either before orV after the plate 18 isV elevated. The core 28V acts to forma circular'opening 36. in the ing 36.. The plate 18 is now lowered to its position Von the table 12 and `a new pallet 31 placed thereon if is desiredsto repeat the operation'and mold another cover 35. i After the required number of covers have" been thus molded avplateV 38 hinged to one side of the frame 16'andV normally disposed to one side thereon clear of the mold, as shown in Figzll, is then turned on its hinges 39 to extend overrthe mold and rest on the upper edge thereof, as shown in Fig. 10; the' plate 38 being rigidly secured in this position by means of a lclasp 40 thereon engaging i a tubular extension 43, particularly shown in Fig. 5, is threadedin a fiange'44 on the up- V per faceof theplate 18,V this extension'43 circular opening 46 formedin the plate 38.

The flange 45 and opening 46 are designed Vto receive a circularpallet 47, shown in Fig.

4, which pallet forms theZ bottom of a circular mold box 48 carried by the plate 38,

which mold box has' an internal diameter at its lower portion slightly larger than the flange 45 and pallet 47 to receive the latter;

this 'portion of .the mold box being also slightlysmaller than. the lower portion of the opening 36 in -thecover 35.`

The upper portion of the mold box 48 is:V Vincreased in diameter'to approximately` the i through thetube 1- 9 and the extension 43,

and its lowerlendrdetachablv secured at 53 to a lug-54 carried on the bedplate 15. The upper .end of the bar 52=extends to'a point adjacent: the upperedge of the mold box 48 through an opening 55 in the pallet 47.

When the lid 49 Vhas been molded the plate 18 is raised by means of the crank 25 and counter-weight 2.6, as before described; the

latterto` its lowermost position. The lid 49.

formed in the mold box 48 will be shaped to correspond with the opening 36 in the cover 35 and willhave an enlarged upper portion which willrest in the off-set portion 37 ofl the opening'36 soV as to support the latter on'V thescover; the lower portion of the .lid extendingV into the opening 36 to prevent its.

being readily displaced. A rectangular opening 57 Will be formed in the lid 49 by the upper end of the bar 52 through which a suitable tool can be introduced for lifting the lid from the cover 25.

What I claim is:

A molding machine, compr'isinga table, a mold box, a pallet carryng' plate adjustably supported on said table within said mold box, a pair of parallel supporting standards beneath said table, a depending member connected to said plate extending' between and parallel With the standards, braclrets on said member slidably engaging' the standards, a sprocket Chain connected with said member, a sprocket engaging said Chain, a counterweight on said chain, means for vmanually rotating said sprocket to raise and lower the depending` member and the i pallet carrying plate, means engageable with 20 plate adjnstably mounted on said pallet 25 carrying plate. In witness that I Vclalm the foregoing I have herennto subscribed my name this 281'd i day of December,fl9l3. i

LEO G. lVitnesses:

EDMUND A. STRAUSE, MARIE BATTEY.

Copies of this patent may be obtained for five cents each, by addressing the Commssioner of Patents. Washington; D. 0. 

